This Green board Wall Sticker allows you to list your vital thoughts, school or business data, personal communication. And also, it is perfect for restaurant foyers, bathrooms, club or any place you want to let imagination run wild! This Green board Stickers work best on smooth surface, flat surfaces.DON'To apply to ROUGH and UNEVEN wall surface If you are questioning the suitability of a surface, test by applying a small decal to an inconspicuous part of the desired surface.